Narrow-linewidth fibre laser with integral fibre grating

Jauncey, I.M.; Reekie, L.; Mears, R.J.; Payne, D.N.; Rowe, C.J.; Reid, D.C.J.; Bennion, I.; Edge, C.

doi:10.1049/el:19860675

Cited by 26 publications

(1 citation statement)

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“…Based on this feature, a FBG can be utilized in various fields as a unique optical passive component [12] [13] [14] [15] [16]; it can be used as a wavelength division multiplexing filter or a dispersion compensator in telecommunications; a wavelength-selective filter which selects required wavelength of light and removes others in fiber amplifiers; or a narrow-band and high-reflectance mirror in optical sensor applications. In general, FBG plays an important role in modern optical applications.…”

Section: Introduction To Fiber Bragg Gratingmentioning

confidence: 99%

Polarization-Dependent Strain and Twist Sensors Based on Tilted Fiber Bragg Grating

Li¹

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Tilted fiber Bragg grating (TFBG) shows various advantages in sensing parameters such as, strain, temperature and twist angle. In particular, multiple data collected from cladding modes of TFBG provide a multi-functional modality. According to this feature, a temperature-independent strain sensor and a high sensitivity twist sensor based on TFBG are introduced in this thesis. Both strain and twist sensors are designed with simplex structures by employing sole TFBG inscribed inside standard single mode fiber respectively.The relative wavelength shifts of P and S polarized spectra are utilized in analyzing strain sensors based on their strong temperature-independent characteristics. Linear experimental results which relate to the wavelength separation from the Bragg mode resonance are presented. Meanwhile, sensitive amplitude variations with respect to the strain applied to TFBG are also evident.Moreover, TFBG shows high sensitivity to twist angle due to its unique structure.The sensitivity of Polarization-dependent loss (PDL) presents an obvious contrast to that of insertion loss; the comparisons are described experimentally. In particular, PDL spectrum of TFBG has much higher twist sensitivity than that of insertion loss spectrum.

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Section: Introduction To Fiber Bragg Gratingmentioning

confidence: 99%